SUPOW(TM) 1 Pair Children Dance Skating Sports Kneepad/Black High Rebound Sponge Knee Protector/Volleyball Football Sports compression Kneecap/Adjustable Thickening Sponge Shin guards/Breathable Back Open Patella Knee Support S:Suitable for people 45-68KG L: Suitable for people 68-90KG Material: cotton high rebound sponge rubber Function: The designed in accordance with the knee curve shape beam set. It can adapt to all kinds of sports is a uniform pressure. And It can quickly discharge the excessive heat and moisture, is the skin dry and comfortable and can provide the appropriate protection function. Convenient and comfortable Breathable back hole design